Fentanyl

Fentanyl is a synthetic opiate analgesic with a rapid onset and short duration of action. It is a strong agonist at the μ-opioid receptors and is historically used to treat breakthrough pain. Fentanyl is approximately 100 times more potent than Morphine, and is commonly used as a patch. Sometimes used as an adulterant for heroin, which has led to many overdose deaths. Fentanyl has very short and less euphoric effects than other opiates, which makes it often understimated and causing overdoses.

Harm potential

extremely addictive with a high potential for abuse

Dosage

This dosage information is gathered from users and resources for educational purposes only. It is not a recommendation and should be verified with other sources for accuracy.

Duration

Effects

• pain relief
• euphoria
• feelings of relaxation
• sedative effects
• changes in focus
• attention disorders
• Respiratory depression
• nausea
• constipation
• dry mouth
• somnolence
• confusion
• weakness
• sweating
• sleepiness
• dizziness
• anxiety

Interactions

Tolerance

full

develops with prolonged and repeated use

half

3 - 7 days

zero

1 - 2 weeks